Gas-burner.



No. 720,275. PTBNTED FEB. 10, l1&903. U. S, MGGORMIGK.

v GAS BURNER. 'Y APPLIoAToN FILED Nov. 1, 1902. No'MoDBL.

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UNITE Snrns ULYSSES S. MCCORMIOK, OF BUFFALO, NEV YORK, ASSIGNOR TOWHITE LIGHT BURNER COMPANY, OF BUFFALOyNEVV YORK, A FIRM.

GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 720,275, dated February10, 1903. Application filed November 7, 1902. Serial No. 130,429. (Nomodel.)

To CtZZ whom, it vita/y concern/.-

Beit known that LULYssns S. MoCoRMIoK, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented new and useful Improvements in Gas-Burners, of which thefollowing is a specification. Y

This invention relates to an atmospheric gas-burner of that kind used inconnection with an incandescent mantle or hood for illuminatingpurposes. As most commonly constructed burners of this type comprise anair and gas mixingtube over the mouth of which a hood or bell-shapedmantle is supported and which is made incandescent by the iiame formingat the mouth of the tube within the mantle. In some of these burners theupper end of the mixing-tube is provided with a Wire-gauze or perforatedcap or end through which the gas passes and above which it burns, whilein others, especially of the larger type, the upper end of the miXing-'tube is left open or unobstructed to the free passage of the gas. Theburner with the unobstructed mixing-tube produces a much hotter Iiameand raises the temperature of the mantle much higher, consequentlyproducing a greater degree of incandescence and brighter light. Theburners with the unobstructed mixing-tube, however, are objectionablefor the reason that in operation a noise or blowing soundlis produced bythe current passing through the burner.

The object of the present invention is to provide the open-mouthed orunobstructed burner with means which will effectually prevent suchobjectionable noise and which at the same time will not appreciablyobstruct the burner-mouth or lower the heating eect of the flame on themantle. This is accomplished by supporting a contrivance or bodycentrally over and some distance above the mouth of the burner ormixing-tube.

In the accompanying drawings, Figure l is a longitudinal section througha burner embodying the invention. Fig. 2 is a transverse section in line2 2, Fig. l, showing the burner in plan. Fig. 3 is a bottom plan View ofthe burner, showing the gas-supply pipe 5o in section. Fig. 4 is alongitudinal section showing a slightly-different arrangement of themuffier.

Like letters ofcreference referto like parts in the several figures.

The burner is of old form and consists of an open-ended air and'gasmixing tube A, the lower end of which is provided with a threaded andperforated nipple B for attaching it to the end of the gas-supply pipeO. The lower portion of the burner-tube shown is flared or enlarged andhas an annular bottom d, provided with air-inlet openings d.

E represents a rotary damper or valve ar ranged beneath the bottom d ofthe burnertube and provided with openings adapted by the rotation of thedamper to more or less obstruct the air-inlet openings in the bottom ofthe burner-tube and regulate the admission of air to the mixing-tube.The burner-tube may be formed and the admission of air regulated in anyother preferred manner.

F represents the incandescent mantle or hood, which is of the usual typeand which may be supported by any known or preferred means, such as awire bail f, secured to a collarf, screwed on the upperend of theburnertube.

G represents thejmuflier or quieting contrivance, which consists of abody of some suitable material not readily consumed or altered incondition by the heat, such as metal or a refractory substance. The bodyis supported centrally over and some distance above the mouth of theburner, so as to be enveloped bythe flame issuing from the burner andshould be of such a shape as to cause the iiame to spread somewhatlaterally on all sides, and yet not change the direction of the ame soas to throw it outside of the incandescent mantle. The body which isshown in the drawings and which has given good results is bulb shaped inform, being circular in cross-section and flaring outwardly and upwardlyon its lower side and tapering upwardly to its upper end. The body issupported by some convenient means which will offer but littleresistance or obstruction to the liow of the gas and llame. As shown inFig. l, the body surmounts a vertical stem or rod g, which is arrangedcentrally in the burner-tube, from which it is supported by a fine orthin transverse rod or bar H, which may simply rest on or be secured tothe upper end of the burner-tube or the collar which supports themantle. represents fine or thin arms or projections which extend fromthe lower portion of the stem and bear against the interior wall of theburner-tube. These arms center and steady the stem in the burner-tubeand prevent it from moving laterally. Vhile this manner of supportingthe body is at present deemed preferable, other suitable supportinginstrumentalities may be employed.

In the construction shown in Fig. 4 the mulller J, which tapers from itscentral portion to points at its upper and lower ends, is supported byrodsj, which rise from the mantle-supporting collar and are connected tothe central portion of the muffler.

In operation the flame spreads and flows smoothly and quietly up aroundthe mufiier, following more or less the contour thereof, and the blowingor sputtering noise is practically,if not absolutely, stopped. The muferarranged as described does not obstruct the flow of the gas and amesufficiently to materially lessen the flame, and when it becomes heatedit increases the brilliancy of the incandescent mantle.

I claim as my inventionl. The combination with an atmosphericgas-burner, of a device for preventing noise in the operation of theburner, comprising a body which flares upwardly and outwardly from itslower end and tapers toward its upper end, and means for supporting saidbody centrally above the month of the burner, substantially as setforth.

2. The combination with an atmospheric burner, of a bulb-like bodyarranged centrally above the mouth of the burner, a supporting-stem forsaid body which is arranged centrally in the burner-tube, and means forsupporting said stem, substantially as sct forth.

3. The combination with an atmospheric burner, of a bulb-like bodyarranged centrally above the mouth of the burner, a supporting-stem forsaid body which is arranged centrally in lthe burner-tube, and across-bar for supporting said stem in the burner, substantially as setforth.

4. The combination with an atmospheric burner, and an incandescentmantle supported over the mouth of the same, of a bulb-like bodyarranged centrally above the mouth of the burner, a supporting-stem forthe body which is arranged centrally in the burnertube, and means forsupporting said stem substantially as set forth.

5. A device for preventing noise in the operation of atmosphericgas-burners, comprising a body, and means for supporting the samecentrally above and spaced from the month of the burner, substantiallyas set forth.

G. A device for preventing noise in the operation of atmosphericgas-burners, comprising a bulb-like body which flares outwardly andupwardly from its lower end and tapers toward its upper end, and meansfor supporting said body centrally above the month of the burner,substantially as set forth.

7. A device for preventing noise in the operation of atmosphericgas-burners, comprising a bulb-like body, a stem Awhich projects fromthe lower end of said body and is adapted to be inserted centrally inthe mouth of the burner, and means for supporting said stem from theburner, substantially as set forth.

Witness my hand this 4th day of Novelliber, 1902.

ULYSSES S. MCCORMICK.

Titnessesz JNO. J. BONNER, C. M. BENTLEY.

